BoM St Helena Marine Weather Forecast

Winds: West to northwesterly 10 to 15 knots.

Seas: Around 1 metre, increasing to 1 to 1.5 metres in the far east.

Swell: West to southwesterly 1.5 to 2.5 metres.

Winds: North to northwesterly 15 to 25 knots, reaching up to 30 knots during the day. Winds turning westerly 20 to 25 knots in the late afternoon.

Seas: Around 1 metre, increasing to 1.5 to 2 metres during the morning, then increasing to 2 to 3 metres around midday.

Swell: Southwesterly 1.5 to 2.5 metres, tending westerly 2 to 3 metres by early evening.

Winds: Southwesterly 20 to 30 knots decreasing to 15 to 25 knots in the morning then decreasing to 10 to 15 knots in the evening.

Seas: 2 to 3 metres, decreasing to 1 to 1.5 metres around midday, then decreasing below 1 metre later in the evening.

Swell: Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres in the far west.

Winds: Variable about 10 knots becoming easterly 10 to 15 knots during the afternoon.

Seas: Below 1 metre.

Swell: Southwesterly 2 to 2.5 metres, increasing to 2.5 to 4 metres in the west.

Winds: Westerly 10 to 15 knots.

Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore.

Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Northwesterly 15 to 25 knots, reaching up to 30 knots during the afternoon and evening. Winds tending westerly in the evening.

Seas: Below 1 metre, increasing to 1 to 2 metres during the morning, then increasing to 2 to 3 metres around midday.

Swell: West to southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 2 metres later in the evening.

Winds: West to southwesterly 25 to 30 knots becoming southwesterly 15 to 25 knots in the morning.

Seas: 2 to 3 metres, decreasing to 1 to 1.5 metres during the afternoon.

Swell: West to southwesterly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres by early evening.

Winds: Southwesterly 10 to 15 knots becoming variable about 10 knots during the morning then becoming easterly 10 to 15 knots during the afternoon.

Seas: Around 1 metre.

Swell: West to southwesterly around 1 metre inshore, increasing to 1 to 2 metres offshore.

Winds: Northwest to southwesterly about 10 knots, reaching up to 20 knots offshore.

Seas: Below 1 metre, increasing to 1 to 2 metres offshore.

Swell: Southwesterly 1 to 1.5 metres, increasing to 2 to 2.5 metres in the east.

Winds: West to northwesterly 10 to 15 knots tending north to northwesterly 15 to 20 knots in the early morning then tending northwest to southwesterly in the late evening. Winds reaching up to 30 knots offshore in the late evening. Squalls possible with the wind change.

Seas: Around 1 metre, increasing to 1 to 2 metres offshore around midday.

Swell: South to southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres in the east.

Winds: Westerly 20 to 30 knots turning southwesterly early in the morning then decreasing to 15 to 20 knots in the evening.

Seas: 2 to 3 metres.

Swell: Southerly 1 to 1.5 metres, tending southwesterly 2 to 3 metres during the morning, then tending south to southwesterly 1.5 to 2.5 metres by early evening.

Winds: Southwesterly 10 to 15 knots becoming variable about 10 knots during the morning then becoming east to northeasterly 15 to 20 knots during the afternoon.

Seas: Around 1 metre, increasing to 1 to 1.5 metres inshore during the afternoon or evening.

Swell: Southerly 1.5 to 2.5 metres.

Winds: Northwesterly 10 to 15 knots, reaching up to 20 knots in the west.

Seas: Around 1 metre, increasing to 1 to 1.5 metres in the far west.

Swell: West to southwesterly 2 to 2.5 metres.

Winds: North to northwesterly 20 to 30 knots turning west to southwesterly 25 to 30 knots during the afternoon and evening.

Seas: 1 to 2 metres, increasing to 2 to 3 metres during the morning.

Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore during the afternoon.

Winds: Southwesterly 25 to 30 knots decreasing to 15 to 25 knots in the early morning then decreasing to 10 to 15 knots in the middle of the day.

Seas: 2 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.

Swell: Southwesterly 3 to 5 metres.

Winds: Variable about 10 knots.

Seas: Below 1 metre.

Swell: Southwesterly 4 to 5 metres.